Finding the Fourth Proportional to 1,404.01, 2,104.16 and 1,077.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.01 : 2,104.16 = 1,077.78 : x
2. Step 2: Convert to fraction form
   1,404.01/2,104.16 = 1,077.78/x
3. Step 3: Cross multiply
   1,404.01x = 2,104.16 × 1,077.78
4. Step 4: Simplify right side
   1,404.01x = 2,267,816.18
5. Step 5: Solve for x
   x = 2,267,816.18/1,404.01
6. Step 6: Final answer
   x = 1,615.25